Eliminating children before they become evil, homicidal dictators was NOT a priority to Allah

"Compassionate and Merciful" Allah was most concerned about the parents of al-Khidr's victim, but where was Allah's concern for the parents of all the victims of mass murderers?Would the world have been a better place had Hitler and Stalin been murdered by Allah before they became adults?Is the alleged oppression of 2 parents arising from the "rebellion & disbelief" truly a greater calamity than the deaths of thousands due to mass murderers?

Revealing that schistosomiasis is spread by snails was also not as important to the god of the vast universe (from Alpha Centauri to Betelgeuse to Rigel and beyond) as rushing to Muhammad's aid when shy Muhammad is confronted by unwelcome guests. We read in Quran 33:53: O Ye who believe! Enter not the dwellings of the Prophet for a meal without waiting for the proper time, unless permission be granted you. But if you are invited, enter, and, when your meal is ended, then disperse. Linger not for conversation. Lo! that would cause annoyance to the Prophet, and he would be shy of (asking) you (to go); but Allah is not shy of the truth.While Muhammad's companions are now long gone, malaria and schistomiasis (spread by snails) ​are present to this day. Do Allah's priorities coincide with your priorities?